Hello,
in my website https://j4.stockmar-kunst.de the HOME-menu has been set up as a standard menu and assigned to the category "Willkommen". It is displayed correctly as the start page and also shows all posts assigned to the "Willkommen"-category. Currently, the two posts from the category "Willkommen" are displayed. The two main-articles "Baustelle" and "Nahtod-Erfahrungen und Sterbebegleitung" are not displayed.
That is the problem:
however, other posts from other categories that are marked as main entries will not appear on the home page (look the attached screenshot).